BLANCHARD: RUBUS OF EASTERN NortH AMERICA 439 
prickles, and specimens from different parts of such a plant might 
easily be mistaken for two species. 
On the evidence of some very divergent forms of R. trivialis 
which I saw in Alabama, and from specimens I have seen, some 
very interesting developments may be expected in Texas, Louis- 
iana, and Mississippi. R. trivialis seems to grade into some coarse 
forms, some of which have a very different form of inflorescence. 
Robin, in his Flore Louisianaise, described two Rubi which, he 
wrote, were abundant in Louisiana, and Rafinesque gave them 
names. His R. nitidus is undoubtedly R. trivialis, and his R. 
angulatus ought to be recognized. 
WESTMINSTER, VT. 
